celebrate 是及物动词,后面直接跟名词,或者用动名词,doing sth,还有that引导的宾语从句.
及物动词 vt.
1.庆祝
We held a party to celebrate our success.
我们举行宴会庆祝我们的成功.
2.举行(宗教仪式);主持(圣餐等)
3.颂扬,赞美
The event was celebrated by poets and historians.
这一事件为诗人和历史学家所赞颂.

congratulate oneself
才是：“暗自庆幸,感到幸运” 的意思